Mathematical representation of the two thresholds is as follows:

For any pixel,

if (Hue is between 4 43, Saturation is between 50 250 and Luminance is between 60 -

230 )



 // Calculate the position of the threshold line at that specific hue value

 S = (4.83) *Hue -53.1

 //check whether the pixel is within the threshold

 if (Saturation > S1 )

 Pixel = Citrus //Pixel was inside threshold and marked as 255 //

 else


Pixel = Background


//Pixel was outside threshold and marked as 0 //


else


Pixel = Background


//Pixel was outside threshold and marked as 0 //